TCPIP_Helper_Base64Decode Function

C

uint16_t TCPIP_Helper_Base64Decode(
    const uint8_t* sourceData, 
    uint16_t sourceLen, 
    uint8_t* destData, 
    uint16_t destLen
);

Description

Decodes a base-64 array to its literal representation.

Preconditions

sourceData, destData - valid pointers.

Parameters


Parameters	Description
sourceData	Pointer to a string of base-64 encoded data.
sourceLen	Length of the base-64 source data. Maximum length that can be written to destData.
destData	Pointer to write the decoded data.

Returns

Number of decoded bytes written to destData.

Remarks

This function will ignore invalid base-64 characters (CR, LF, etc). If sourceData is equal to destData, the data will be converted in-place. If sourceData is not equal to destData, but the regions overlap, the behavior is undefined. Decoded data size is 3/4 the size of the encoded source data.